code. compile. run. debug. share.
Source Code
Language
#include <iostream>
#include<sstream>
#include<string>
#include<vector>
#include<fstream>
//this class represents a single vertex which is made up of two point x and y
class Vertex
{
int x = 0;
int y = 0;
public:
//parameterized constructor for initializing x and y
Vertex(int px, int py): x(px), y(py)
{
}
//display Vertex
void printVertex() const
{
std::cout<<x <<" "<<y<<" ";
}
};
//this class represents a line segment which is made up of multiple vertices
struct Line
{
std::string lineName; //this describes which line it is
std::vector<Vertex> vertices; //this is a collection of all the vertex that this particular line is made up of
};
int main()
{
std::string lineString;
int pointX = 0, pointY = 0;
std::ifstream inputFile("input.txt");
//a collection of all the Lines
std::vector<Line> lines;
if(inputFile)
{
//go line by line
while(std::getline(inputFile, lineString))
{
std::istringstream ss(lineString);
//create a Line object
Line currentLine;
//read the first string specifying which line is this
ss >> currentLine.lineName;
//go number by number
while(ss >> pointX >> pointY)
{
//add vertex to vector vertices
currentLine.vertices.emplace_back(pointX, pointY);
}
//add this currentLine to lines
lines.emplace_back(currentLine);
}
}
else
{
std::cout<<"file cannot be opened"<<std::endl;
}
//lets confirm that we have all the lines correctly stored
for(const Line& line: lines)
{
std::cout<<line.lineName<<": ";
for(const Vertex& vertex: line.vertices)
{
vertex.printVertex();
}
std::cout<<std::endl;
}
}
lineone 1 1 2 2 3 3 4 4
linetwo 1 1 2 2 3 3
linethree 1 1 5 5
Compiling Program...
Standard Input:
Interactive Console
Text
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